Wubei Zhi (Vol. 10)

thousand, along with the Henan Administrator Wu Bo, to jointly defend Luoyang. Guangwu was leading northern troops to pacify Yan and Zhao. Only Wei Commandery and Henei had not encountered the army, so their cities were intact and their granaries were full. He then appointed Kou Xun as the Administrator of Henei and Yi as the General of Mengjin, commanding the armies of the two commanderies to stand at the river, combining forces with Xun to resist Zhu Wei and others. Yi then sent a letter to Li Yi, saying, "I have heard that a clear mirror is used to reflect the image, and past events are used to understand the present. Weizi left Shang and entered Zhou; Xiang Bo betrayed Chu and returned to Han; Zhou Bo welcomed the King of Dai and deposed the young emperor; Huo Guang honored Emperor Xiaoxuan and deposed the Prince of Changyi. These men all feared Heaven and knew the decree; they understood the signs of survival and extinction, and the reasons for decline and rise. Therefore, they were able to achieve success in one era and bequeath their legacies to ten thousand generations. If you think Chang'an can still be propped up for a few more years, know that one does not separate the distant from the close, nor treat the far as better than the near. How could Jiwen Referring to Li Yi by his courtesy name merely occupy one corner?"